[llvm] [LAA] Check if invariant accesses is strictly before other access. (PR #92307)

[Florian Hahn via llvm-commits]

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@@ -1991,13 +2015,12 @@ getDependenceDistanceStrideAndSize(
     return MemoryDepChecker::Dependence::Unknown;
   }
 
-  uint64_t TypeByteSize = DL.getTypeAllocSize(ATy);
   bool HasSameSize =
       DL.getTypeStoreSizeInBits(ATy) == DL.getTypeStoreSizeInBits(BTy);
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fhahn wrote:

Thanks, I've updated the code to only query `DL.getTypeAllocSize` if non of the accessed types is scalable.

At the moment, those sizes will only be used by the newly added code; `getPtrStride` will return 0 for scalable types, so we will for now always return an unknown dependence due to the stride checks above. 

https://github.com/llvm/llvm-project/pull/92307